205424497 has 2 divisors, whose sum is σ = 205424498. Its totient is φ = 205424496.

The previous prime is 205424491. The next prime is 205424503. The reversal of 205424497 is 794424502.

It is a balanced prime because it is at equal distance from previous prime (205424491) and next prime (205424503).

It can be written as a sum of positive squares in only one way, i.e., 203461696 + 1962801 = 14264^2 + 1401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205424497 is a prime.

It is not a weakly prime, because it can be changed into another prime (205424491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102712248 + 102712249.

It is an arithmetic number, because the mean of its divisors is an integer number (102712249).

Almost surely, 2^205424497 is an apocalyptic number.

It is an amenable number.

205424497 is a deficient number, since it is larger than the sum of its proper divisors (1).

205424497 is an equidigital number, since it uses as much as digits as its factorization.

205424497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 205424497 is about 14332.6374753567. The cubic root of 205424497 is about 590.0435637660.

Adding to 205424497 its reverse (794424502), we get a palindrome (999848999).

The spelling of 205424497 in words is "two hundred five million, four hundred twenty-four thousand, four hundred ninety-seven".